CVE-2026-54336

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54336", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-12T19:23:22.316Z", "datePublished": "2026-08-17T21:01:48.667Z", "dateUpdated": "2026-08-18T13:09:21.804Z"}, "containers": {"cna": {"title": "JumpServer: KoKo Web Terminal SFTP Path Traversal on Authorized Asset", "problemTypes": [{"descriptions": [{"cweId": "CWE-22", "lang": "en", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-x6rg-36j6-76vr", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-x6rg-36j6-76vr"}, {"name": "https://github.com/jumpserver/koko/commit/02fabebe27dacce89114fba122c667a946fd12ea", "tags": ["x_refsource_MISC"], "url": "https://github.com/jumpserver/koko/commit/02fabebe27dacce89114fba122c667a946fd12ea"}, {"name": "https://github.com/jumpserver/koko/releases/tag/v4.10.17", "tags": ["x_refsource_MISC"], "url": "https://github.com/jumpserver/koko/releases/tag/v4.10.17"}], "affected": [{"vendor": "jumpserver", "product": "jumpserver", "versions": [{"version": ">= 4.8.0, < 4.10.17", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-17T21:01:48.667Z"}, "descriptions": [{"lang": "en", "value": "JumpServer is an open source bastion host and an operation and maintenance security audit system. From 4.8.0 until 4.10.17, an authenticated user with SFTP permission to an authorized asset can submit crafted traversal paths through the KoKo Web Terminal SFTP feature, causing AssetDir.GetRealPath() in pkg/srvconn/sftp_asset.go to resolve paths outside the intended SFTP root and permit read, list, write, rename, or delete operations under the configured backend account on that asset. This issue is fixed in version 4.10.17."}], "source": {"advisory": "GHSA-x6rg-36j6-76vr", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-x6rg-36j6-76vr", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-18T13:04:01.699543Z", "id": "CVE-2026-54336", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-18T13:09:21.804Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-54336", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-18T13:04:01.699543Z"}}}], "references": [{"url": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-x6rg-36j6-76vr", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-18T13:08:29.464Z"}}], "cna": {"title": "JumpServer: KoKo Web Terminal SFTP Path Traversal on Authorized Asset", "source": {"advisory": "GHSA-x6rg-36j6-76vr", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}}], "affected": [{"vendor": "jumpserver", "product": "jumpserver", "versions": [{"status": "affected", "version": ">= 4.8.0, < 4.10.17"}]}], "references": [{"url": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-x6rg-36j6-76vr", "name": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-x6rg-36j6-76vr", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/jumpserver/koko/commit/02fabebe27dacce89114fba122c667a946fd12ea", "name": "https://github.com/jumpserver/koko/commit/02fabebe27dacce89114fba122c667a946fd12ea", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/jumpserver/koko/releases/tag/v4.10.17", "name": "https://github.com/jumpserver/koko/releases/tag/v4.10.17", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "JumpServer is an open source bastion host and an operation and maintenance security audit system. From 4.8.0 until 4.10.17, an authenticated user with SFTP permission to an authorized asset can submit crafted traversal paths through the KoKo Web Terminal SFTP feature, causing AssetDir.GetRealPath() in pkg/srvconn/sftp_asset.go to resolve paths outside the intended SFTP root and permit read, list, write, rename, or delete operations under the configured backend account on that asset. This issue is fixed in version 4.10.17."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-22", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-17T21:01:48.667Z"}}}, "cveMetadata": {"cveId": "CVE-2026-54336", "state": "PUBLISHED", "dateUpdated": "2026-08-18T13:09:21.804Z", "dateReserved": "2026-06-12T19:23:22.316Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-08-17T21:01:48.667Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "jumpserver", "vendor": "jumpserver", "versions": [{"status": "affected", "version": ">= 4.8.0, < 4.10.17"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "JumpServer is an open source bastion host and an operation and maintenance security audit system. From 4.8.0 until 4.10.17, an authenticated user with SFTP permission to an authorized asset can submit crafted traversal paths through the KoKo Web Terminal SFTP feature, causing AssetDir.GetRealPath() in pkg/srvconn/sftp_asset.go to resolve paths outside the intended SFTP root and permit read, list, write, rename, or delete operations under the configured backend account on that asset. This issue is fixed in version 4.10.17."}], "id": "CVE-2026-54336", "lastModified": "2026-09-09T21:11:46.833", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-54336", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-18T13:04:01.699543Z", "version": "2.0.3"}}]}, "published": "2026-08-17T21:16:45.930", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-x6rg-36j6-76vr"}, {"source": "security-advisories@github.com", "url": "https://github.com/jumpserver/koko/commit/02fabebe27dacce89114fba122c667a946fd12ea"}, {"source": "security-advisories@github.com", "url": "https://github.com/jumpserver/koko/releases/tag/v4.10.17"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-x6rg-36j6-76vr"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.8.0,4.10.17)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "jumpserver", "source": "cna", "vendor": "jumpserver"}, "product": "jumpserver", "vendor": "jumpserver"}], "created": "2026-08-18T00:00:05.094057+00:00", "updated": "2026-08-18T00:15:03.700061+00:00", "vendors": ["jumpserver", "jumpserver$PRODUCT$jumpserver"]}